The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 29, 2019
Filed:
Sep. 21, 2017
Applicant:
Snaptrack, Inc., San Diego, CA (US);
Inventors:
Ravi Kiran Challa, San Diego, CA (US);
Akshaya Ishwarayya Hiremath, San Diego, CA (US);
Attieh Shahvarpour, Escondido, CA (US);
Assignee:
SnapTrack, Inc., San Diego, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03H 9/64 (2006.01); H03H 9/145 (2006.01); H03H 9/00 (2006.01); H03H 9/25 (2006.01); H03H 9/02 (2006.01);
U.S. Cl.
CPC ...
H03H 9/643 (2013.01); H03H 9/0047 (2013.01); H03H 9/02637 (2013.01); H03H 9/14555 (2013.01); H03H 9/14582 (2013.01); H03H 9/25 (2013.01); H03H 9/6433 (2013.01); H03H 9/6436 (2013.01); H03H 9/6466 (2013.01);
Abstract
Techniques are disclosed for increasing capacitance, decreasing losses, and/or improving a quality factor of a SAW filter. The techniques include using a partial-IDT instead of a reflector between two groups of IDTs. The partial-IDT is implemented having a cavity transition on a first end and a reflector transition on a second end. The cavity transition facilitates propagation of main-resonance acoustic waves into, or between elements of, the partial-IDT. The reflector transition facilitates reflection of main-resonance acoustic waves.